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<html  lang="en" xmlns:th="http://www.thymeleaf.org">
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<meta charset="UTF-8">
<title>utility</title>
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   <h4>内置变量</h4>
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	字符串长度：<span th:text="${#strings.length(words)}"></span><br/>
	<span th:text="${#strings.concat('字符串连接：', words)}"></span><br/>
	时间格式化：<span th:text="${#dates.format(date, 'yyyy-MM-dd HH:mm:ss')}"></span><br/>
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